Home / 13,890.45-19,168.07-7,601.61

Finding the Fourth Proportional to 13,890.45, 19,168.07 and 7,601.61

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Solution

The fourth proportional to 13,890.45, 19,168.07 and 7,601.61 is: 10,489.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.45 : 19,168.07 = 7,601.61 : x
  2. Step 2: Convert to fraction form
    13,890.45/19,168.07 = 7,601.61/x
  3. Step 3: Cross multiply
    13,890.45x = 19,168.07 × 7,601.61
  4. Step 4: Simplify right side
    13,890.45x = 145,708,154.58
  5. Step 5: Solve for x
    x = 145,708,154.58/13,890.45
  6. Step 6: Final answer
    x = 10,489.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.